<template>
    <div class="login-container">
        <div class="login-weaper animated bounceInDown">
            <div class="login-left">
                <div class="login-time" v-text="currentTime" />
                <img :src="sysInfo.sys_app_logo" alt="" class="img" />
                <p class="title" v-text="sysInfo.sys_app_name" />
            </div>
            <div class="login-border">
                <div class="login-main">
                    <div class="login-title">用户登录</div>
                    <el-form
                        ref="loginForm"
                        :model="loginForm"
                        :rules="loginRules"
                        class="login-form"
                        autocomplete="on"
                        label-position="left"
                    >
                        <el-form-item prop="username">
                            <el-input
                                ref="username"
                                v-model="loginForm.username"
                                placeholder="用户名"
                                name="username"
                                type="text"
                                tabindex="1"
                                autocomplete="on"
                            />
                        </el-form-item>
                        <el-form-item prop="password">
                            <el-input
                                ref="password"
                                v-model="loginForm.password"
                                type="password"
                                placeholder="密码"
                                name="password"
                                tabindex="2"
                                autocomplete="on"
                                show-password
                                @keyup="checkCapslock"
                                @blur="capsTooltip = false"
                                @keyup.enter="handleLogin"
                            />
                        </el-form-item>
                        <el-form-item
                            prop="code"
                            style="width: 66%; float: left"
                        >
                            <el-input
                                v-model="loginForm.code"
                                placeholder="验证码"
                                name="username"
                                type="text"
                                tabindex="3"
                                maxlength="5"
                                autocomplete="off"
                                @keyup.enter="handleLogin"
                            />
                        </el-form-item>
                        <div
                            class="login-code"
                            style="
                                cursor: pointer;
                                width: 30%;
                                height: 32px;
                                float: right;
                                background-color: #f0f1f5;
                            "
                        >
                            <img
                                style="
                                    height: 32px;
                                    width: 100%;
                                    border: 1px solid rgba(0, 0, 0, 0.1);
                                    border-radius: 5px;
                                "
                                :src="codeUrl"
                                @click="getCode"
                            />
                        </div>

                        <el-button
                            :loading="loading"
                            type="primary"
                            style="
                                width: 100%;
                                padding: 12px 20px;
                                margin-bottom: 30px;
                            "
                            @click.prevent="handleLogin"
                        >
                            <span v-if="!loading">登 录</span>
                            <span v-else>登 录 中...</span>
                        </el-button>
                    </el-form>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import { getCodeImg } from '@/api/login';
import { useStore } from 'vuex';
import moment from 'moment';

export default {
    name: 'Login',
    data() {
        return {
            codeUrl: '',
            cookiePassword: '',
            refreshParticles: true,
            loginForm: {
                username: '',
                password: '',
                rememberMe: false,
                code: '',
                uuid: '',
            },
            loginRules: {
                username: [
                    {
                        required: true,
                        trigger: 'blur',
                        message: '用户名不能为空',
                    },
                ],
                password: [
                    {
                        required: true,
                        trigger: 'blur',
                        message: '密码不能为空',
                    },
                ],
                code: [
                    {
                        required: true,
                        trigger: 'change',
                        message: '验证码不能为空',
                    },
                ],
            },
            loading: false,
            redirect: undefined,
            otherQuery: {},
            currentTime: null,
            sysInfo: '',
        };
    },
    watch: {
        $route: {
            handler: function (route) {
                const query = route.query;
                if (query) {
                    this.redirect = query.redirect;
                    this.otherQuery = this.getOtherQuery(query);
                }
            },
            immediate: true,
        },
    },
    created() {
        this.getCode();
        this.getCurrentTime();
        this.getSystemSetting();
    },
    mounted() {
        if (this.loginForm.username === '') {
            this.$refs.username.focus();
        } else if (this.loginForm.password === '') {
            this.$refs.password.focus();
        }
        window.addEventListener('resize', () => {
            this.refreshParticles = false;
            this.$nextTick(() => (this.refreshParticles = true));
        });
    },
    unmounted() {
        clearInterval(this.timer);
        window.removeEventListener('resize', () => {
            console.log(1);
        });
    },
    methods: {
        getSystemSetting() {
            this.$store.dispatch('system/settingDetail').then((ret) => {
                this.sysInfo = ret;
                document.title = ret.sys_app_name;
            });
        },
        getCurrentTime() {
            this.timer = setInterval(() => {
                this.currentTime = moment().format('YYYY-MM-DD HH时mm分ss秒');
            }, 1000);
        },
        getCode() {
            getCodeImg().then((res) => {
                if (res !== undefined) {
                    this.codeUrl = res.data;
                    this.loginForm.uuid = res.id;
                }
            });
        },
        checkCapslock({ shiftKey, key } = {}) {
            if (key && key.length === 1) {
                if (
                    (shiftKey && key >= 'a' && key <= 'z') ||
                    (!shiftKey && key >= 'A' && key <= 'Z')
                ) {
                    this.capsTooltip = true;
                } else {
                    this.capsTooltip = false;
                }
            }
            if (key === 'CapsLock' && this.capsTooltip === true) {
                this.capsTooltip = false;
            }
        },
        handleLogin() {
            this.$refs.loginForm.validate((valid) => {
                if (valid) {
                    this.loading = true;
                    this.$store
                        .dispatch('user/login', this.loginForm)
                        .then(() => {
                            this.$router.push({
                                path: this.redirect || '/',
                                query: this.otherQuery,
                            });
                        })
                        .catch(() => {
                            this.loading = false;
                            this.getCode();
                        });
                } else {
                    console.log('error submit!!');
                    return false;
                }
            });
        },
        getOtherQuery(query) {
            return Object.keys(query).reduce((acc, cur) => {
                if (cur !== 'redirect') {
                    acc[cur] = query[cur];
                }
                return acc;
            }, {});
        },
    },
};
</script>

<style lang="scss" scoped>
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

.login-container {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    width: 100%;
    height: 100%;
    margin: 0 auto;
    background: url('../../assets/login.png') no-repeat;
    background-color: #0e6cff;
    position: relative;
    background-size: cover;
    height: 100vh;
    background-position: 50%;
}

#particles-js {
    z-index: 1;
    width: 100%;
    height: 100%;
    position: absolute;
}

.login-weaper {
    margin: 0 auto;
    width: 1000px;
    -webkit-box-shadow: -4px 5px 10px rgba(0, 0, 0, 0.4);
    box-shadow: -4px 5px 10px rgba(0, 0, 0, 0.4);
    z-index: 1000;
}

.login-left {
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    background-color: rgba(64, 158, 255, 0);
    color: #fff;
    float: left;
    width: 50%;
    position: relative;
    min-height: 500px;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    .login-time {
        position: absolute;
        left: 25px;
        top: 25px;
        width: 100%;
        color: #fff;
        opacity: 0.9;
        font-size: 18px;
        overflow: hidden;
        font-weight: 500;
    }
}

.login-left .img {
    width: 90px;
    height: 90px;
    border-radius: 3px;
}

.login-left .title {
    text-align: center;
    color: #fff;
    letter-spacing: 2px;
    font-size: 16px;
    font-weight: 600;
}

.login-border {
    position: relative;
    min-height: 500px;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    border-left: none;
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    color: #fff;
    background-color: hsla(0, 0%, 100%, 0.9);
    width: 50%;
    float: left;
}

.login-main {
    margin: 0 auto;
    width: 65%;
}

.login-title {
    color: #333;
    margin-bottom: 40px;
    font-weight: 500;
    font-size: 22px;
    text-align: center;
    letter-spacing: 4px;
}

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
        color: $cursor;
    }
}

/* reset element-ui css */
.login-container {
    :v-deep(.el-input) {
        display: inline-block;
        height: 47px;
        width: 85%;

        input {
            background: transparent;
            border: 0px;
            -webkit-appearance: none;
            border-radius: 0px;
            padding: 12px 5px 12px 15px;
            color: #333;
            height: 47px;
            caret-color: #333;

            &:-webkit-autofill {
                box-shadow: 0 0 0px 1000px $bg inset !important;
                -webkit-text-fill-color: $cursor !important;
            }
        }
    }

    .el-form-item {
        border: 1px solid rgba(0, 0, 0, 0.1);
        background: rgba(255, 255, 255, 0.8);
        border-radius: 5px;
        color: #454545;
    }
}
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
    .tips {
        font-size: 14px;
        color: #fff;
        margin-bottom: 10px;

        span {
            &:first-of-type {
                margin-right: 16px;
            }
        }
    }

    .svg-container {
        padding: 6px 5px 6px 15px;
        color: $dark_gray;
        vertical-align: middle;
        width: 30px;
        display: inline-block;
    }

    .title-container {
        position: relative;

        .title {
            font-size: 26px;
            color: $light_gray;
            margin: 0px auto 40px auto;
            text-align: center;
            font-weight: bold;
        }
    }

    .show-pwd {
        position: absolute;
        right: 10px;
        top: 7px;
        font-size: 16px;
        color: $dark_gray;
        cursor: pointer;
        user-select: none;
    }

    .thirdparty-button {
        position: absolute;
        right: 0;
        bottom: 6px;
    }

    @media only screen and (max-width: 470px) {
        .thirdparty-button {
            display: none;
        }
        .login-weaper {
            width: 100%;
            padding: 0 30px;
            box-sizing: border-box;
            box-shadow: none;
        }
        .login-main {
            width: 80%;
        }
        .login-left {
            display: none !important;
        }
        .login-border {
            width: 100%;
        }
    }
}
</style>
